|NK55 (imported from Japan)|
|Round top segmen|
|SPH: 0.00~+3.00 0.00~-3.00 ADD: +1.00~+3.50|
Bifocal means that there are two different diopters on the same lens. The two diopter are distributed in different areas of the lens. The area for viewing far is called the far field, which is located in the upper part of the lens. The near zone is located in the lower half of the lens.
The object in the far distance can be seen through the far-field of a pair of lenses, and the close-range objects can be seen through the near-field of the same pair of lenses. You don't need to carry two pairs of glasses with you, you don't need to switch between distant and near-eye glasses frequently.
Hard Coating(HC): To enhance the hardness of the lens to prevent the substrate scratch
Anti-reflection Coating(HMC/ AR): To protect the lens effectively from reflection, enhancing functional and charity of your vision
Super hydrophobic Coating(SHMC): To make the lens waterproof, antistatic, anti slip and oil resistance